Hot answers tagged live-cd
Boot a Live System from CD/DVD/USB Assuming the root partition of the Ubuntu installation on the hdd is sda1, mount it to /mnt sudo mount /dev/sda1 /mnt If the root filesystem is not on on sda1 use e.g sudo fdisk -l to find the correct identifier. Open the file /mnt/etc/grub.d/40_custom with your favorite editor, e.g sudo nano /mnt/etc/grub.d/40_custom ...
The file you get from http://www.ubuntu.com/download/desktop provides both installing and testing. Download Ubuntu 14.04. Then look over here to learn how to create a live usb stick. Also, make sure to enable booting from usb in your bios settings in case it isn't set that way anyway.
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